Figure 6.

Accumulation of Zn and Cd in different rice organs at the grain filling stage. Plants of the wild type (WT) and all mutant lines were grown in a paddy field until the grain was ripe. A and C, Concentrations of Zn (A) and Cd (C) in the different tissues. B and D, Zn (B) and Cd (D) concentrations in brown rice. Plants of wild-type and all knockout lines were grown in a paddy field containing 1.80 mg Cd kg⁻¹ and 121.90 mg Zn kg⁻¹ (pH 5.4). All data were based on comparisons with wild-type rice plants. Values represent means ± sd of n = 5 biological replicates. Statistical comparison was performed by Tukey’s HSD mean-separation test (*P < 0.05 and **P < 0.01). DW, Dry weight.